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arXiv · 0905.0392

Spin-Orbit Interactions in Bilayer Exciton-Condensate Ferromagnets

Y. -P. Shim·A. H. MacDonald
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Abstract

Bilayer electron-hole systems with unequal electron and hole densities are expected to have exciton condensate ground states with spontaneous spin-polarization in both conduction and valence bands. In the absence of spin-orbit and electron-hole exchange interactions there is no coupling between the spin-orientations in the two quantum wells. In this article we show that Rashba spin-orbit interactions lead to unconventional magnetic anisotropies, whose strength we estimate, and to ordered states with unusual quasiparticle spectra.

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Y. -P. Shim, A. H. MacDonald. 2009-05-04. Spin-Orbit Interactions in Bilayer Exciton-Condensate Ferromagnets. https://doi.org/10.1103/physrevb.79.235329

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